drmP.h is an relic from the days when there was a single header file.
To enable the removal of drmP.h from all users drop include
of drmP.h from bridge/dw_hdmi.h.
A few files relied on the file included in drmP.h - add explicit
include statements or forward declarations to these files.
Build tested with arm and x86.
v2:
- prefer forward declarations when possible (Laurent Pinchart)
- sort include files (Laurent Pinchart)
Signed-off-by: Sam Ravnborg <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Cc: Archit Taneja <[email protected]>
Cc: Andrzej Hajda <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Kieran Bingham <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Neil Armstrong <[email protected]>
Cc: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 4 ++++
drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 1 +
include/drm/bridge/dw_hdmi.h | 6 ++++--
3 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
index 2228689d9a5e..5cbb71a866d5 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
@@ -5,6 +5,10 @@
* Copyright (c) 2017 Renesas Solutions Corp.
* Kuninori Morimoto <[email protected]>
*/
+
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+
#include <drm/bridge/dw_hdmi.h>
#include <sound/hdmi-codec.h>
diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
index 75490a3e0a2a..790d499daa10 100644
--- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
@@ -7,6 +7,7 @@
* Contact: Laurent Pinchart ([email protected])
*/
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 9c56412bb2cf..9f93895dde88 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -10,9 +10,11 @@
#ifndef __DW_HDMI__
#define __DW_HDMI__
-#include <drm/drmP.h>
-
+struct drm_connector;
+struct drm_display_mode;
+struct drm_encoder;
struct dw_hdmi;
+struct platform_device;
/**
* DOC: Supported input formats and encodings
--
2.12.0
On 30.12.2018 18:48, Sam Ravnborg wrote:
> drmP.h is an relic from the days when there was a single header file.
> To enable the removal of drmP.h from all users drop include
> of drmP.h from bridge/dw_hdmi.h.
>
> A few files relied on the file included in drmP.h - add explicit
> include statements or forward declarations to these files.
> Build tested with arm and x86.
>
> v2:
> - prefer forward declarations when possible (Laurent Pinchart)
> - sort include files (Laurent Pinchart)
>
> Signed-off-by: Sam Ravnborg <[email protected]>
> Reviewed-by: Laurent Pinchart <[email protected]>
> Cc: Archit Taneja <[email protected]>
> Cc: Andrzej Hajda <[email protected]>
> Cc: David Airlie <[email protected]>
> Cc: Daniel Vetter <[email protected]>
> Cc: Kieran Bingham <[email protected]>
> Cc: Fabio Estevam <[email protected]>
> Cc: Neil Armstrong <[email protected]>
> Cc: Maxime Ripard <[email protected]>
One general comment below.
> ---
> drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 4 ++++
> drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 1 +
> include/drm/bridge/dw_hdmi.h | 6 ++++--
> 3 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> index 2228689d9a5e..5cbb71a866d5 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> @@ -5,6 +5,10 @@
> * Copyright (c) 2017 Renesas Solutions Corp.
> * Kuninori Morimoto <[email protected]>
> */
> +
> +#include <linux/dma-mapping.h>
> +#include <linux/module.h>
> +
> #include <drm/bridge/dw_hdmi.h>
>
> #include <sound/hdmi-codec.h>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
> index 75490a3e0a2a..790d499daa10 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
> @@ -7,6 +7,7 @@
> * Contact: Laurent Pinchart ([email protected])
> */
>
> +#include <linux/mod_devicetable.h>
> #include <linux/module.h>
> #include <linux/platform_device.h>
>
> diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> index 9c56412bb2cf..9f93895dde88 100644
> --- a/include/drm/bridge/dw_hdmi.h
> +++ b/include/drm/bridge/dw_hdmi.h
> @@ -10,9 +10,11 @@
> #ifndef __DW_HDMI__
> #define __DW_HDMI__
>
> -#include <drm/drmP.h>
> -
> +struct drm_connector;
> +struct drm_display_mode;
> +struct drm_encoder;
> struct dw_hdmi;
> +struct platform_device;
>
> /**
> * DOC: Supported input formats and encodings
I wonder if it wouldn't be better to create common file for forward
declarations. For example: include/drm/drm_forward.h which will contain
only forward declarations, this way we could avoid adding these
declarations in every file again and again. Since I have not seen such
practice in kernel I wonder if such approach has no serious drawbacks,
but for now I do not see any, except it looks like another incarnation
of drmP.h :)
Quick grep shows potential candidates for forward declarations:
$ git grep -Ph '^struct drm_\S+;$' include/ drivers/gpu/ | sort | uniq
-c | sort -n | tail
7 struct drm_encoder;
7 struct drm_gem_object;
8 struct drm_printer;
9 struct drm_connector;
9 struct drm_framebuffer;
13 struct drm_plane;
14 struct drm_crtc;
22 struct drm_i915_private;
23 struct drm_file;
47 struct drm_device;
Anyway:
Reviewed-by: Andrzej Hajda <[email protected]>
--
Regards
Andrzej